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One line Luminosity and Contrast control in Python
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| # The worst things I ever had to write. | |
| # Origin multi-line from : https://www.geeksforgeeks.org/changing-the-contrast-and-brightness-of-an-image-using-python-opencv/ | |
| import cv2 as cv | |
| def transform(image, contrast=[0-255](default=128), luminosity=[0-255](default=255)): | |
| return (cv.addWeighted(((cv.addWeighted(image, ((255 if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 255+(int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))) - ((int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0)) / 255, image, 0, (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) != 0 else image)), float(131 * ((int((contrast - 0) * (127 - (-127)) / (254 - 0) + (-127))) + 127)) / (127 * (131 - (int((contrast - 0) * (127 - (-127)) / (254 - 0) + (-127))))), ((cv.addWeighted(image, ((255 if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 255+(int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))) - ((int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0)) / 255, image, 0, (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) != 0 else image)), 0, 127 * (1 - float(131 * ((int((contrast - 0) * (127 - (-127)) / (254 - 0) + (-127))) + 127)) / (127 * (131 - (int((contrast - 0) * (127 - (-127)) / (254 - 0) + (-127)))))))) if (int((contrast - 0) * (127 - (-127)) / (254 - 0) + (-127)))!=0 else (cv.addWeighted(image, ((255 if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 255+(int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))) - ((int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0)) / 255, image, 0, (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255)))>0 else 0) if (int((brightness - 0) * (255 - (-255)) / (510 - 0) + (-255))) != 0 else image) |
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